# Regexp to match the above macros.
$obsolete_rx = '(' . join ('|', keys %obsolete_macros) . ')';
+# This maps extensions onto language names.
+%extension_map = ();
+
+# This maps languages names onto properties.
+%language_map = ();
+
\f
+# Initialize global constants and our list of languages that are
+# internally supported.
&initialize_global_constants;
+®ister_language ('c', '', 1,
+ 'c');
+®ister_language ('cxx', 'CXXLINK', 0,
+ 'c++', 'cc', 'cpp', 'cxx', 'C');
+®ister_language ('header', '', 0,
+ 'h', 'H', 'hxx', 'h++', 'hh', 'hpp');
+®ister_language ('yacc', '', 1,
+ 'y');
+®ister_language ('yaccxx', 'CXXLINK', 0,
+ 'y++', 'yy', 'yxx');
+®ister_language ('lex', '', 1,
+ 'l');
+®ister_language ('lexxx', 'CXXLINK', 0,
+ 'l++', 'll', 'lxx');
+®ister_language ('asm', '', 0,
+ 's', 'S');
+# FIXME: fortran not finished.
+®ister_language ('fortran', '', 0,
+ 'F', 'f', 'f90', 'for');
+
+
# Parse command line.
&parse_arguments (@ARGV);
&handle_built_sources;
# This must be run after all the sources are scanned.
- &handle_yacc_lex_cxx;
+ &finish_languages;
# Re-init SOURCES and OBJECTS. FIXME: other code shouldn't depend
# on this (but currently does).
{
local ($out) = @_;
- # Always set this.
- $dir_holds_sources = 1;
-
# Maybe require libtool library object files.
local ($extension) = '.o';
$extension = '.$(OBJEXT)' if $seen_objext;
return $extension;
}
-# Handle yacc and lex.
-sub handle_yacc_lex_cxx
+# Call finish function for each language that was used.
+sub finish_languages
{
- #
- # First do yacc and lex.
- #
-
- local ($yacc_count) = scalar (keys %yacc_sources);
- local ($lex_count) = scalar (keys %lex_sources);
-
- if ($yacc_count)
- {
- local ($file, $base, $hname, $cname);
- local (%seen_suffix) = ();
- foreach $file (keys %yacc_sources)
- {
- $file =~ /(\..*)$/;
- &output_yacc_build_rule ($1, $yacc_count > 1)
- if (! defined $seen_suffix{$1});
- $seen_suffix{$1} = 1;
-
- # Now generate rule to make the header file. This should
- # only be generated if `yacc -d' specified. But right now
- # there is no way to determine that. FIXME: the
- # AM_FOOFLAGS idea would suffice here.
- $file =~ /^(.*)\.(y|yy|y\+\+|yxx)$/;
- $base = $1;
- ($hname = $2) =~ tr/y/h/;
- ($cname = $2) =~ tr/y/c/;
- $output_rules .= "${base}.${hname}: ${base}.${cname}\n";
-
- # If the files are built in the build directory, then we
- # want to remove them with `make clean'. If they are in
- # srcdir they shouldn't be touched. However, we can't
- # determine this statically, and the GNU rules say that
- # yacc/lex output files should be removed by
- # maintainer-clean. So that's what we do.
- push (@maintainer_clean_files, $base . $hname, $base . $cname);
- }
- $output_rules .= "\n";
-
- if (! defined $configure_vars{'YACC'})
- {
- &am_error ("yacc source seen but \`YACC' not defined in \`configure.in'");
- }
- if (&variable_defined ('YACCFLAGS'))
- {
- &am_line_error ('YACCFLAGS',
- "\`YACCFLAGS' obsolete; use \`YFLAGS' instead");
- }
- }
- if ($lex_count)
- {
- local (%seen_suffix) = ();
- local ($file, $cname);
- foreach $file (keys %lex_sources)
- {
- $file =~ /(\..*)$/;
- &output_lex_build_rule ($1, $lex_count > 1)
- if (! defined $seen_suffix{$1});
- $seen_suffix{$1} = 1;
-
- # If the files are built in the build directory, then we
- # want to remove them with `make clean'. If they are in
- # srcdir they shouldn't be touched. However, we can't
- # determine this statically, and the GNU rules say that
- # yacc/lex output files should be removed by
- # maintainer-clean. So that's what we do.
- $file =~ /^(.*)\.(l|ll|l\+\+|lxx)$/;
- ($cname = $2) =~ tr/y/c/;
- push (@maintainer_clean_files, $1 . $cname);
- }
-
- if (! defined $configure_vars{'LEX'})
- {
- &am_error ("lex source seen but \`LEX' not defined in \`configure.in'");
- }
- if (! $seen_decl_yytext)
- {
- &am_error ("lex source seen but \`AC_DECL_YYTEXT' not in \`configure.in'");
- }
- }
-
- if ($yacc_count > 1 || $lex_count > 1)
+ local ($ext, $name, $lang, %done);
+ local ($all_cxx) = 1;
+ foreach $ext (sort keys %extension_seen)
{
- # If there is more than one distinct yacc (resp lex) source
- # file in a given directory, then the `ylwrap' program is
- # required to allow parallel builds to work correctly. FIXME:
- # for now, no line number.
- &require_config_file ($FOREIGN, 'ylwrap');
- if ($config_aux_dir ne '.' && $config_aux_dir ne '')
- {
- &define_variable ('YLWRAP', $config_aux_dir . "/ylwrap");
- }
- else
- {
- &define_variable ('YLWRAP', '$(srcdir)/ylwrap');
- }
- }
+ $lang = $extension_map{$ext};
+ next if defined $done{$lang};
+ $done{$lang} = 1;
+ $all_cxx = 0 if $lang ne 'cxx';
- #
- # Handle libtool.
- #
- local ($ltcompile, $ltlink) = ('', '');
- if ($seen_libtool)
- {
- &define_configure_variable ("LIBTOOL");
- $ltcompile = '$(LIBTOOL) --mode=compile ';
- $ltlink = '$(LIBTOOL) --mode=link ';
+ # Compute the function name of the finisher and then call it.
+ $name = 'lang_' . $lang . '_finish';
+ do $name ();
}
- #
- # Now handle C++.
- #
- local (@cxx_list) = keys %cxx_extensions;
- local ($cxx_count) = scalar @cxx_list;
- if ($cxx_count)
+ # If the project is entirely C++, don't bother with the C stuff.
+ # But if anything else creeps in, then use it.
+ if (! $all_cxx || scalar keys %suffix_rules > 0)
{
- push (@suffixes, @cxx_list);
+ local ($ltcompile, $ltlink) = &libtool_compiler;
- &define_configure_variable ("CXXFLAGS");
- &define_variable ('CXXCOMPILE', '$(CXX) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)');
- &define_variable ('LTCXXCOMPILE',
- $ltcompile . '$(CXX) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)')
- if ($seen_libtool);
-
- &define_variable ('CXXLINK', $ltlink . '$(CXX) $(AM_CXXFLAGS) $(CXXFLAGS) $(LDFLAGS) -o $@');
-
- local ($ext);
- foreach $ext (@cxx_list)
- {
- $output_rules .= ("$ext.o:\n"
- . "\t\$(CXXCOMPILE) -c \$<\n");
- # FIXME: Using cygpath should be somehow conditional.
- $output_rules .= ("$ext.obj:\n"
- . "\t\$(CXXCOMPILE) -c `cygpath -w \$<`\n")
- if ($seen_objext);
- $output_rules .= ("$ext.lo:\n"
- . "\t\$(LTCXXCOMPILE) -c \$<\n")
- if ($seen_libtool);
- }
-
- if (! defined $configure_vars{'CXX'})
- {
- &am_error ("C++ source seen but \`CXX' not defined in \`configure.in'");
- }
- }
-
- #
- # Handle some ansi2knr cleanup.
- #
-
- # Push all libobjs files onto de_ansi_files. We actually only
- # push files which exist in the current directory, and which are
- # genuine source files.
- local ($file);
- foreach $file (keys %libsources)
- {
- if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
- {
- $de_ansi_files{$1} = 1;
- }
- }
-
- if (defined $options{'ansi2knr'} && keys %de_ansi_files)
- {
- # Make all _.c files depend on their corresponding .c files.
- local ($base, @objects);
- foreach $base (sort (keys %de_ansi_files))
- {
- # Each _.c file must depend on ansi2knr; otherwise it
- # might be used in a parallel build before it is built.
- # We need to support files in the srcdir and in the build
- # dir (because these files might be auto-generated. But
- # we can't use $< -- some makes only define $< during a
- # suffix rule.
- $output_rules .= ($base . "_.c: $base.c \$(ANSI2KNR)\n\t"
- . '$(CPP) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
- . '`if test -f $(srcdir)/' . $base . '.c'
- . '; then echo $(srcdir)/' . $base . '.c'
- . '; else echo ' . $base . '.c; fi` '
- . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
- . '| $(ANSI2KNR) > ' . $base . "_.c\n");
- push (@objects, $base . '_'
- . ($seen_objext ? '.$(OBJEXT)' : '.o'));
- push (@objects, $base . '_.lo') if $seen_libtool;
- }
-
- # Make all _.o (and _.lo) files depend on ansi2knr.
- # Use a sneaky little hack to make it print nicely.
- &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
- }
-
- #
- # Last, handle some C cleanup.
- #
- if ($seen_any_source)
- {
&define_configure_variable ('CFLAGS');
&define_variable ('COMPILE',
'$(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)');
if ($seen_libtool);
&define_variable ('LINK', $ltlink . '$(CC) $(AM_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@');
}
-
- if ($seen_c_source && ! defined $configure_vars{'CC'})
- {
- &am_line_error ($seen_c_source,
- "C source seen but \`CC' not defined in \`configure.in'");
- }
}
-
# Output a rule to build from a YACC source. The output from YACC is
# compiled with C or C++, depending on the extension of the YACC file.
sub output_yacc_build_rule
# Does much of the actual work for handle_source_transform.
# Arguments are:
-# pattern matching object extension (e.g., .o)
+# object extension (e.g., `$U.lo')
# list of source files to transform
# Result is a list
# first element is name of linker to use (empty string for default linker)
-# remaining elements are names of `.o's
+# remaining elements are names of objects
sub handle_single_transform_list
{
- local ($objpat, @files) = @_;
- local ($linker) = '';
+ local ($obj, @files) = @_;
local (@result) = ();
local ($nonansi_obj) = $obj;
$nonansi_obj =~ s/_//g;
+ local (%linkers_used) = ();
if (@files > 0)
{
# Turn sources into objects.
foreach (@files)
{
- # Skip header files, including C++-ish ones. The list
- # of C++ header extensions comes from Emacs 19.32
- # etags.
- next if /\.[hH]$/;
- next if /\.hxx$/;
- next if /\.h\+\+$/;
- next if /\.hh$/;
- next if /\.hpp$/;
# Skip things that look like configure substitutions.
next if /^\@.*\@$/;
- # Include appropriate file for lex or yacc source in
- # distribution. If the extension is the regular '.y' or
- # '.l', we assume C compilation, and the generated file
- # has exension .c. Otherwise, we compile with C++, and
- # make the following association: (yy -> cc, y++ -> c++,
- # yxx -> cxx), similarly for .ll, etc.
- if (/^(.*)\.(y|yy|y\+\+|yxx)$/)
- {
- # Yacc source.
- local ($ext) = $2;
- $ext =~ tr/y/c/;
- &push_dist_common ("$1.$ext");
- $yacc_sources{$_} = 1;
- }
- elsif (/^(.*)\.(l|ll|l\+\+|lxx)$/)
+ # We don't support source files in a subdirectory. The
+ # reason is that we'd want to put the .o into a similar
+ # subdirectory, but this means finding a good way to make
+ # the directory. Later.
+ if (/\//)
{
- # Lex source.
- local ($ext) = $2;
- $ext =~ tr/l/c/;
- &push_dist_common ("$1.$ext");
- $lex_sources{$_} = 1;
+ &am_error
+ ("not supported: source file `$_' is in subdirectory");
+ next;
}
- # Strip any directory prefix.
- $_ = &basename ($_);
+ # Split file name into base and extension.
+ local ($base, $extension, $linker, $object);
+ next if ! /^(.*)\.(.*)$/;
+ $base = $1;
+ $extension = $2;
- local ($is_cxx) = 0;
- # Transform source files into .o files. List of C++
- # extensions comes from Emacs 19.34 etags.
- if (s/\.(c\+\+|cc|cpp|cxx|C)$/$nonansi_obj/)
- {
- $cxx_extensions{'.' . $1} = 1;
- $linker = 'CXXLINK';
- $is_cxx = 1;
- }
- elsif (s/\.(yy|y\+\+|yxx|ll|l\+\+|lxx)$/$nonansi_obj/)
- {
- # Compiling lex or yacc with C++
- local ($ext) = $1;
- $ext =~ tr/ly/cc/;
- $cxx_extensions{".$ext"} = 1;
- $linker = 'CXXLINK';
- }
- elsif (s/\.([Ff]|f90|for)$/$nonansi_obj/)
- {
- # FORTRAN support. FIXME: not finished.
- }
- elsif (s/\.[sS]$/$nonansi_obj/)
+ local ($lang) = $extension_map{$extension};
+ if ($lang)
{
- # .s is assembly. Just rewrite it. FIXME: not finished.
- }
- elsif (defined ($options{'ansi2knr'}) && s/_\.[cly]$/_.c/)
- {
- # FIXME include line number in error.
- &am_error ("C source file \`$_' would be deleted by ansi2knr rules");
- }
- elsif (s/\.[cly]$//)
- {
- # .c is C. .l is lex. .y is yacc.
-
- # Note: first we rewrite (eg) foo.c to foo and push
- # the file onto the list of deansified files. Then we add
- # $obj, which can either be `_.o', or simply `.o' if
- # deansification is not required.
- $de_ansi_files{$_} = 1;
- $_ .= $obj;
- $seen_c_source = 1;
+ &saw_extension ($extension);
+ # Found the language, so see what it says.
+ local ($subr) = 'lang_' . $lang . '_rewrite';
+ # Note: computed subr call.
+ local ($r) = do $subr ($base, $extension);
+ # Skip this entry if we were asked not to process it.
+ next if ! $r;
+
+ # Now extract linker and other info.
+ $linker = $language_map{$lang . '-linker'};
+
+ if ($language_map{$lang . '-ansi-p'})
+ {
+ $object = $base . $obj;
+ }
+ else
+ {
+ $object = $base . $nonansi_obj;
+ }
}
- elsif (/\.$source_suffix_pattern$/)
+ elsif ($extension =~ /^$source_suffix_pattern$/)
{
# We just rewrite it. Maybe we should do more.
- s//.$suffix_rules{$1}/;
- $objpat = "\\." . $suffix_rules{$1};
+ $object = $base . '.' . $suffix_rules{$extension};
+ $linker = '';
}
else
{
next;
}
- $seen_any_source = 1 unless $is_cxx;
- push (@result, $_);
+ $linkers_used{$linker} = 1;
+
+ push (@result, $object);
# Transform .o or $o file into .P file (for automatic
# dependency code).
- s/$objpat$/.P/g;
- $dep_files{'.deps/' . $_} = 1;
+ $dep_files{'.deps/' . $base . '.P'} = 1;
}
}
- return ($linker, @result);
+ return (&resolve_linker (%linkers_used), @result);
}
# Handle SOURCE->OBJECT transform for one program or library.
# one_file is canonical name. unxformed is given name. obj is
# object extension.
local ($one_file, $unxformed, $obj) = @_;
- local ($objpat) = $obj;
- $objpat =~ s/(\W)/\\$1/g;
- # Handle explicit `.o' as well as whatever we're passed.
- $objpat = '(' . $objpat . "|\\.o)";
local ($linker) = '';
foreach $cond (@conds)
{
@files = &variable_value_as_list ($var, $cond);
- ($temp, @result) = &handle_single_transform_list ($objpat,
+ ($temp, @result) = &handle_single_transform_list ($obj,
@files);
$linker = $temp if $linker eq '';
push (@files, $unxformed . '.c');
}
- ($temp, @result) = &handle_single_transform_list ($objpat, @files);
+ ($temp, @result) = &handle_single_transform_list ($obj, @files);
$linker = $temp if $linker eq '';
&define_pretty_variable ($one_file . "_OBJECTS", '', @result)
unless $prefix eq 'EXTRA_';
# We don't care about the return value of this function. We just
# want to make sure to update %dep_files with the contents of
# BUILT_SOURCES.
- &handle_single_transform_list ("\\.o", @sources);
+ &handle_single_transform_list (".o", @sources);
}
# Special-case @ALLOCA@ and @LIBOBJS@ in _LDADD or _LIBADD variables.
local ($iter, $rewrite);
foreach $iter (keys %libsources)
{
- if ($iter =~ /\.[cly]$/)
+ if ($iter =~ /\.([cly])$/)
{
- $seen_c_source = $var;
- $seen_any_source = 1;
+ &saw_extension ($1);
+ &saw_extension ('c');
}
if ($iter =~ /\.h$/)
if ! defined $libsources{'alloca.c'};
$dep_files{'.deps/alloca.P'} = 1;
&require_file_with_line ($var, $FOREIGN, 'alloca.c');
- $seen_c_source = $var;
- $seen_any_source = 1;
+ &saw_extension ('c');
}
}
return if (! &variable_defined ('info_TEXINFOS')
&& ! &variable_defined ('html_TEXINFOS'));
+ if (&variable_defined ('html_TEXINFOS'))
+ {
+ &am_line_error ('html_TEXINFOS',
+ "HTML generation not yet supported");
+ return;
+ }
+
local (@texis) = &variable_value_as_list ('info_TEXINFOS', 'all');
local (@info_deps_list, @dvis_list, @texi_deps);
push (@phony, 'tags-recursive');
}
- if ($dir_holds_sources
- || $dir_holds_headers
+ if (&saw_sources_p (1)
|| &variable_defined ('ETAGS_ARGS')
|| @tag_deps)
{
{
# Include GNU-make-specific auto-dep code. Don't include it
# if DEP_FILES would be empty.
- if ($dir_holds_sources && keys %dep_files)
+ if (&saw_sources_p (0) && keys %dep_files)
{
&define_pretty_variable ('DEP_FILES', '', sort keys %dep_files);
$output_rules .= &file_contents ('depend');
push (@clean, 'depend');
&push_phony_cleaners ('depend');
+ # FIXME: this should use another property of the language
+ # instead of being hard-coded.
$output_rules .=
&file_contents_with_transform ('s/\@EXT\@/.c/g;'
. 's/\@PFX\@//g;',
'depend2');
local ($ext);
- foreach $ext (sort keys %cxx_extensions)
+ foreach $ext (&cxx_extensions)
{
$output_rules .=
&file_contents_with_transform ('s/\@EXT\@/' . $ext .'/g;'
# Handle C headers.
sub handle_headers
{
- $dir_holds_headers = &am_install_var ('header', 'HEADERS', 'include',
- 'oldinclude', 'pkginclude',
- 'noinst', 'check');
+ local (@r);
+ @r = &am_install_var ('header', 'HEADERS', 'include',
+ 'oldinclude', 'pkginclude',
+ 'noinst', 'check');
+ foreach (@r)
+ {
+ next unless /\.(.*)$/;
+ &saw_extension ($1);
+ }
}
sub handle_gettext
# Change each dependency `BLARG' into `clean-BLARG'.
grep (($_ = $name . 'clean-' . $_) && 0, @deps);
- # Push the previous clean target.
- push (@deps, $last_name . $target . '-am');
+ # Push the previous clean target. There is no previous clean
+ # target if we're doing mostlyclean.
+ push (@deps, $last_name . $target . '-am')
+ unless $name eq 'mostly';
# If a -local version of the rule is given, add it to the list.
if (&target_defined ($name . $target . '-local'))
}
}
+################################################################
+#
+# Functions to handle files of each language.
+
+# Each `lang_X_rewrite' function follows a simple formula:
+# * Args are the base name and extension of the file.
+# * Return value is 1 if file is to be dealt with, 0 otherwise.
+# Much of the actual processing is handled in handle_single_transform_list.
+# These functions exist so that auxiliary information can be recorded
+# for a later cleanup pass. Note that the calls to these functions
+# are computed, so don't bother searching for their precise names
+# in the source.
+
+# Rewrite a single C source file.
+sub lang_c_rewrite
+{
+ local ($base, $ext) = @_;
+
+ if (defined $options{'ansi2knr'} && $base =~ /_$/)
+ {
+ # FIXME: include line number in error.
+ &am_error ("C source file \`$base.c' would be deleted by ansi2knr rules");
+ }
+
+ $de_ansi_files{$base} = 1;
+ return 1;
+}
+
+# Rewrite a single C++ source file.
+sub lang_cxx_rewrite
+{
+ return 1;
+}
+
+# Rewrite a single header file.
+sub lang_header_rewrite
+{
+ # Header files are simply ignored.
+ return 0;
+}
+
+# Rewrite a single yacc file.
+sub lang_yacc_rewrite
+{
+ local ($base, $ext) = @_;
+
+ &lang_c_rewrite ($base, $ext);
+ $yacc_sources{$base . '.' . $ext} = 1;
+ $ext =~ tr/y/c/;
+ &saw_extension ('c');
+ &push_dist_common ($base . '.' . $ext);
+ return 1;
+}
+
+# Rewrite a single yacc++ file.
+sub lang_yaccxx_rewrite
+{
+ local ($base, $ext) = @_;
+
+ $yacc_sources{$base . '.' . $ext} = 1;
+ $ext =~ tr/y/c/;
+ &saw_extension ($ext);
+ &push_dist_common ($base . '.' . $ext);
+ return 1;
+}
+
+# Rewrite a single lex file.
+sub lang_lex_rewrite
+{
+ local ($base, $ext) = @_;
+
+ &lang_c_rewrite ($base, $ext);
+ $lex_sources{$base . '.' . $ext} = 1;
+ $ext =~ tr/l/c/;
+ &saw_extension ('c');
+ &push_dist_common ($base . '.' . $ext);
+ return 1;
+}
+
+# Rewrite a single lex++ file.
+sub lang_lexxx_rewrite
+{
+ local ($base, $ext) = @_;
+
+ $lex_sources{$base . '.' . $ext} = 1;
+ $ext =~ tr/l/c/;
+ &saw_extension ($ext);
+ &push_dist_common ($base . '.' . $ext);
+ return 1;
+}
+
+# Rewrite a single assembly file.
+sub lang_asm_rewrite
+{
+ return 1;
+}
+
+# Rewrite a single Fortran file.
+sub lang_fortran_rewrite
+{
+ # FIXME: not done yet.
+ return 0;
+}
+
+# The lang_X_finish functions are called after all source file
+# processing is done. Each should handle defining rules for the
+# language, etc. A finish function is only called if a source file of
+# the appropriate type has been seen.
+
+sub lang_c_finish
+{
+ # Push all libobjs files onto de_ansi_files. We actually only
+ # push files which exist in the current directory, and which are
+ # genuine source files.
+ local ($file);
+ foreach $file (keys %libsources)
+ {
+ if ($file =~ /^(.*)\.[cly]$/ && -f "$relative_dir/$file")
+ {
+ $de_ansi_files{$1} = 1;
+ }
+ }
+
+ if (defined $options{'ansi2knr'} && keys %de_ansi_files)
+ {
+ # Make all _.c files depend on their corresponding .c files.
+ local ($base, @objects);
+ foreach $base (sort keys %de_ansi_files)
+ {
+ # Each _.c file must depend on ansi2knr; otherwise it
+ # might be used in a parallel build before it is built.
+ # We need to support files in the srcdir and in the build
+ # dir (because these files might be auto-generated. But
+ # we can't use $< -- some makes only define $< during a
+ # suffix rule.
+ $output_rules .= ($base . "_.c: $base.c \$(ANSI2KNR)\n\t"
+ . '$(CPP) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) '
+ . '`if test -f $(srcdir)/' . $base . '.c'
+ . '; then echo $(srcdir)/' . $base . '.c'
+ . '; else echo ' . $base . '.c; fi` '
+ . "| sed 's/^# \\([0-9]\\)/#line \\1/' "
+ . '| $(ANSI2KNR) > ' . $base . "_.c\n");
+ push (@objects, $base . '_'
+ . ($seen_objext ? '.$(OBJEXT)' : '.o'));
+ push (@objects, $base . '_.lo') if $seen_libtool;
+ }
+
+ # Make all _.o (and _.lo) files depend on ansi2knr.
+ # Use a sneaky little hack to make it print nicely.
+ &pretty_print_rule ('', '', @objects, ':', '$(ANSI2KNR)');
+ }
+
+ if (! defined $configure_vars{'CC'})
+ {
+ # FIXME: line number.
+ &am_error ("C source seen but \`CC' not defined in \`configure.in'");
+ }
+}
+
+# A helper which computes a sorted list of all C++ extensions which
+# were seen.
+sub cxx_extensions
+{
+ local ($key, @r);
+ foreach $key (sort keys %extension_seen)
+ {
+ push (@r, '.' . $key) if $extension_map{$key} eq 'cxx';
+ }
+ return @r;
+}
+
+sub lang_cxx_finish
+{
+ local (@cxx_list) = &cxx_extensions;
+ local ($cxx_count) = scalar @cxx_list;
+ if ($cxx_count)
+ {
+ push (@suffixes, @cxx_list);
+
+ local ($ltcompile, $ltlink) = &libtool_compiler;
+
+ &define_configure_variable ("CXXFLAGS");
+ &define_variable ('CXXCOMPILE', '$(CXX) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)');
+ &define_variable ('LTCXXCOMPILE',
+ $ltcompile . '$(CXX) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS)')
+ if ($seen_libtool);
+
+ &define_variable ('CXXLINK', $ltlink . '$(CXX) $(AM_CXXFLAGS) $(CXXFLAGS) $(LDFLAGS) -o $@');
+
+ local ($ext);
+ foreach $ext (@cxx_list)
+ {
+ $output_rules .= ("$ext.o:\n"
+ . "\t\$(CXXCOMPILE) -c \$<\n");
+ # FIXME: Using cygpath should be somehow conditional.
+ $output_rules .= ("$ext.obj:\n"
+ . "\t\$(CXXCOMPILE) -c `cygpath -w \$<`\n")
+ if ($seen_objext);
+ $output_rules .= ("$ext.lo:\n"
+ . "\t\$(LTCXXCOMPILE) -c \$<\n")
+ if ($seen_libtool);
+ }
+
+ if (! defined $configure_vars{'CXX'})
+ {
+ &am_error ("C++ source seen but \`CXX' not defined in \`configure.in'");
+ }
+ }
+}
+
+sub lang_header_finish
+{
+ # Nothing to do.
+}
+
+# This is a helper for both lex and yacc.
+sub yacc_lex_finish_helper
+{
+ return if defined $language_scratch{'lex-yacc-done'};
+ $language_scratch{'lex-yacc-done'} = 1;
+
+ # If there is more than one distinct yacc (resp lex) source file
+ # in a given directory, then the `ylwrap' program is required to
+ # allow parallel builds to work correctly. FIXME: for now, no
+ # line number.
+ &require_config_file ($FOREIGN, 'ylwrap');
+ if ($config_aux_dir ne '.' && $config_aux_dir ne '')
+ {
+ &define_variable ('YLWRAP', $config_aux_dir . "/ylwrap");
+ }
+ else
+ {
+ &define_variable ('YLWRAP', '$(srcdir)/ylwrap');
+ }
+}
+
+sub lang_yacc_finish
+{
+ return if defined $language_scratch{'yacc-done'};
+ $language_scratch{'yacc-done'} = 1;
+
+ local ($file, $base, $hname, $cname);
+ local (%seen_suffix) = ();
+ local (@yacc_files) = sort keys %yacc_sources;
+ local ($yacc_count) = scalar (@yacc_files);
+ foreach $file (@yacc_files)
+ {
+ $file =~ /(\..*)$/;
+ &output_yacc_build_rule ($1, $yacc_count > 1)
+ if ! defined $seen_suffix{$1};
+ $seen_suffix{$1} = 1;
+
+ # Now generate rule to make the header file. This should only
+ # be generated if `yacc -d' specified. But right now there is
+ # no way to determine that. FIXME: examine AM_YFLAGS?
+ $file =~ /^(.*)\.(y|yy|y\+\+|yxx)$/;
+ $base = $1;
+ ($hname = $2) =~ tr/y/h/;
+ ($cname = $2) =~ tr/y/c/;
+ $output_rules .= "${base}.${hname}: ${base}.${cname}\n";
+
+ # If the files are built in the build directory, then we want
+ # to remove them with `make clean'. If they are in srcdir
+ # they shouldn't be touched. However, we can't determine this
+ # statically, and the GNU rules say that yacc/lex output files
+ # should be removed by maintainer-clean. So that's what we
+ # do.
+ push (@maintainer_clean_files, $base . $hname, $base . $cname);
+ }
+ $output_rules .= "\n";
+
+ if (! defined $configure_vars{'YACC'})
+ {
+ &am_error ("yacc source seen but \`YACC' not defined in \`configure.in'");
+ }
+ if (&variable_defined ('YACCFLAGS'))
+ {
+ &am_line_error ('YACCFLAGS',
+ "\`YACCFLAGS' obsolete; use \`YFLAGS' instead");
+ }
+
+ if ($yacc_count > 1)
+ {
+ &yacc_lex_finish_helper;
+ }
+}
+
+sub lang_yaccxx_finish
+{
+ &lang_yacc_finish;
+}
+
+sub lang_lex_finish
+{
+ return if defined $language_scratch{'lex-done'};
+ $language_scratch{'lex-done'} = 1;
+
+ local (%seen_suffix) = ();
+ local ($file, $cname);
+ local ($lex_count) = scalar (keys %lex_sources);
+ foreach $file (sort keys %lex_sources)
+ {
+ $file =~ /(\..*)$/;
+ &output_lex_build_rule ($1, $lex_count > 1)
+ if (! defined $seen_suffix{$1});
+ $seen_suffix{$1} = 1;
+
+ # If the files are built in the build directory, then we want
+ # to remove them with `make clean'. If they are in srcdir
+ # they shouldn't be touched. However, we can't determine this
+ # statically, and the GNU rules say that yacc/lex output files
+ # should be removed by maintainer-clean. So that's what we
+ # do.
+ $file =~ /^(.*)\.(l|ll|l\+\+|lxx)$/;
+ ($cname = $2) =~ tr/y/c/;
+ push (@maintainer_clean_files, $1 . $cname);
+ }
+
+ if (! defined $configure_vars{'LEX'})
+ {
+ &am_error ("lex source seen but \`LEX' not defined in \`configure.in'");
+ }
+ if (! $seen_decl_yytext)
+ {
+ &am_error ("lex source seen but \`AC_DECL_YYTEXT' not in \`configure.in'");
+ }
+
+ if ($lex_count > 1)
+ {
+ &yacc_lex_finish_helper;
+ }
+}
+
+sub lang_lexxx_finish
+{
+ &lang_lex_finish;
+}
+
+sub lang_asm_finish
+{
+ # Pretend we're C.
+ &lang_c_finish;
+}
+
+sub lang_fortran_finish
+{
+ # FIXME: Nothing to do.
+}
+
+# A helper which decides whether libtool is needed. Returns prefix
+# for compiler and linker.
+sub libtool_compiler
+{
+ local ($ltcompile, $ltlink) = ('', '');
+ if ($seen_libtool)
+ {
+ &define_configure_variable ("LIBTOOL");
+ $ltcompile = '$(LIBTOOL) --mode=compile ';
+ $ltlink = '$(LIBTOOL) --mode=link ';
+ }
+ return ($ltcompile, $ltlink);
+}
+
+# Given a hash table of linker names, pick the name that has the most
+# precedence. This is lame, but something has to have global
+# knowledge in order to eliminate the conflict. Add more linkers as
+# required.
+sub resolve_linker
+{
+ local (%linkers) = @_;
+
+ return 'CXXLINK'
+ if defined $linkers{'CXXLINK'};
+ return 'LINK';
+}
+
+# Called to indicate that an extension was used.
+sub saw_extension
+{
+ local ($ext) = @_;
+ $extension_seen{$ext} = 1;
+}
+
+# Called to ask whether there source files have been seen . If HEADERS
+# is 1, headers can be included.
+sub saw_sources_p
+{
+ local ($headers) = @_;
+
+ if ($headers)
+ {
+ $headers = 0;
+ }
+ else
+ {
+ $headers = defined $extension_seen{'header'};
+ }
+
+ return scalar keys %extension_seen > $headers;
+}
+
+# Register a single language. If LINKER is the empty string, it means
+# to use the C linker.
+sub register_language
+{
+ local ($language, $linker, $deansi_p, @extensions) = @_;
+
+ local ($iter);
+ foreach $iter (@extensions)
+ {
+ if (defined $extension_map{$iter})
+ {
+ print STDERR
+ "automake: programming error: duplicate extension $iter\n";
+ exit 1;
+ }
+ $extension_map{$iter} = $language;
+ }
+
+ $language_map{$language . '-ansi-p'} = $deansi_p;
+ $language_map{$language . '-linker'} = $linker;
+}
+
+
################################################################
# Pretty-print something. HEAD is what should be printed at the
@sources = ();
@objects = ();
- # TRUE if current directory holds any C source files.
- $dir_holds_sources = 0;
-
# These variables track inclusion of various compile-related .am
# files. $included_generic_compile is TRUE if the basic code has
# been included. $included_knr_compile is TRUE if the ansi2knr
$included_knr_compile = 0;
$included_libtool_compile = 0;
- # TRUE if current directory holds any headers.
- $dir_holds_headers = 0;
-
# TRUE if install targets should work recursively.
$recursive_install = 0;
%yacc_sources = ();
%lex_sources = ();
- # C++ source extensions we've seen.
- %cxx_extensions = ();
-
- # TRUE if we've seen any non-C++ sources. This actually holds a
- # line number or the name of a symbol corresponding to a line
- # number where the C sources were seen. If it is -1 then it means
- # we couldn't (easily) figure out which line of the Makefile.am
- # mentioned the sources.
- $seen_c_source = 0;
-
- # TRUE if we've seen any sources at all.
- $seen_any_source = 0;
-
# This is a list of all targets to run during "make dist".
@dist_targets = ();
# This is the name of the recursive `all' target to use.
$all_target = 'all-recursive';
+
+ # This keeps track of which extensions we've seen (that we care
+ # about).
+ %extension_seen = ();
+
+ # This is random scratch space for the language finish functions.
+ # Don't randomly overwrite it; examine other uses of keys first.
+ %language_scratch = ();
}
git://sourceware.org / automake.git / commitdiff